JPS6271916U - - Google Patents
Info
- Publication number
- JPS6271916U JPS6271916U JP16108085U JP16108085U JPS6271916U JP S6271916 U JPS6271916 U JP S6271916U JP 16108085 U JP16108085 U JP 16108085U JP 16108085 U JP16108085 U JP 16108085U JP S6271916 U JPS6271916 U JP S6271916U
- Authority
- JP
- Japan
- Prior art keywords
- variable gain
- output voltage
- amplifier
- output
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案の自動利得制御回路の一実施例
を示す回路図、第２図は同じく利得特性の説明図
、第３図は従来の自動利得制御回路図、第４図は
第３図における利得特性の説明図である。
１：可変利得増幅器、２：入力信号端子、３：
出力信号端子、４：振幅検出器、５：誤差増幅器
、６：基準電圧入力端子、７：利得制御信号端子
、８：比較器、９：基準電圧供給端子、１０：出
力端子、１１：出力抵抗、１２，１３：分圧抵抗
器。
Fig. 1 is a circuit diagram showing an embodiment of the automatic gain control circuit of the present invention, Fig. 2 is an explanatory diagram of the gain characteristics, Fig. 3 is a conventional automatic gain control circuit diagram, and Fig. 4 is the same as Fig. 3. FIG. 2 is an explanatory diagram of gain characteristics in FIG. 1: Variable gain amplifier, 2: Input signal terminal, 3:
Output signal terminal, 4: Amplitude detector, 5: Error amplifier, 6: Reference voltage input terminal, 7: Gain control signal terminal, 8: Comparator, 9: Reference voltage supply terminal, 10: Output terminal, 11: Output resistance , 12, 13: voltage dividing resistor.
Claims (1)
圧を検波する振幅検出器と、該振幅検出器の出力
電圧と基準電圧をそれぞれ入力信号とし、その出
力電圧を前記可変利得増幅器の利得制御信号とす
る誤差増幅器とよりなる自動利得制御回路におい
て、出力側に分圧抵抗を有し、前記振幅検出器の
出力電圧を基準電圧と比較する比較器を設け、該
比較器の出力電圧の一部を前記誤差増幅器の前記
基準電圧として用い、前記可変利得増幅器の入力
信号に応じて前記可変利得増幅器の出力利得を制
御することを特徴とする自動利得制御回路。 A variable gain amplifier, an amplitude detector that detects the output voltage of the variable gain amplifier, the output voltage and the reference voltage of the amplitude detector are respectively input signals, and the output voltage is used as a gain control signal of the variable gain amplifier. In an automatic gain control circuit including an error amplifier, a comparator having a voltage dividing resistor on the output side and comparing the output voltage of the amplitude detector with a reference voltage is provided, and a part of the output voltage of the comparator is An automatic gain control circuit that is used as the reference voltage of an error amplifier and controls an output gain of the variable gain amplifier according to an input signal of the variable gain amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16108085U JPS6271916U (en) | 1985-10-21 | 1985-10-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16108085U JPS6271916U (en) | 1985-10-21 | 1985-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271916U true JPS6271916U (en) | 1987-05-08 |
Family
ID=31087056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16108085U Pending JPS6271916U (en) | 1985-10-21 | 1985-10-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004534471A (en) * | 2001-07-06 | 2004-11-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Communication system and device provided with such a communication system |
-
1985
- 1985-10-21 JP JP16108085U patent/JPS6271916U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004534471A (en) * | 2001-07-06 | 2004-11-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Communication system and device provided with such a communication system |
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